Amazon.com: AC/DC Power Adapter for Roland Edirol PCR-M30 PCR-M50 PCR-M80 USB Midi Keyboard : Musical Instruments
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JRRshop.com | Edirol PCR-M50 49-Key USB MIDI Keyboard Controller
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Amazon.com: MyVolts 9V Power Supply Adaptor Compatible with/Replacement for Roland PCR-M50 MIDI Controller - US Plug with Extension and ON/Off Switch : Musical Instruments
roland pcr m50 MIDI - Mostaganem Algeria
KORG M50-61 Synthesizer Keyboard Vintage working 4959112066755 | eBay